Are you familiar with this controller?
Turcom Z-Wave In-Wall On / Off Switch Module for Smart Home Applications https://www.amazon.com/dp/B01E9JIKWC/ref=cm_sw_r_cp_api_Z3VrxbK0JWSCC
will it work with st?
Looks to be the same as the monoprice branded one. Should work fine, I have the single pole version installed using this device type.